The couple — now known as the Duke and Duchess of Sussex — leave Windsor Castle in a horse-drawn carriage. David Fisher/REX/Shutterstock

The Royal Borough of Windsor & Maidenhead said more than 100,000 people visited Windsor for the wedding. Mike Egerton/PA Wire/AP

People wave to the newlyweds during their carriage trip through Windsor. Antony Jones/Getty Images

The carriage was pulled by Windsor Grey horses. Windsor Grey horses have been pulling the carriages of British monarchs since the 1800s. Victoria Jones/PA Wire/AP

Markle and the prince met on a blind date in London in 2016. They were set up by a mutual friend. John Sibley/Pool/AP

The couple walks down the steps of St. George’s Chapel after being married. Ben Birchall/Pool/AFP/Getty Images

Queen Elizabeth II and her husband, Prince Philip, leave the chapel after the wedding. Gareth Fuller/Pool/Getty Images

The wedding guests watch the bride and groom walk out of the chapel. Danny Lawson/Pool/AFP/Getty Images

The Most Rev. Michael Curry spoke passionately about the power of love as he preached during the wedding. The American bishop’s fiery preaching style was a marked departure from the usually conservative tone of a British royal wedding. Owen Humphreys/Pool/AFP/Getty Images

In a reflection of their contemporary nature, the couple chose a modern set of wedding vows. There was no promise by Markle to "obey" her husband. Rather, she pledged to "love him, comfort him, honor and protect him." Jonathan Brady/Pool/Getty Images

St. George’s Chapel has been a place of prayer, pageantry and ritual since the 15th century. It has been a favorite spot for royal christenings, marriages and funerals. Ten British kings are buried in its vaults. Owen Humphreys/Pool/AFP/Getty Images

Harry places the ring on his bride’s finger during their wedding ceremony. Her wedding ring was made from Welsh gold and is a gift from the Queen. Jonathan Brady/Pool/AP

Harry pulls back his bride’s veil as the wedding is officiated by Justin Welby, the Archbishop of Canterbury. Owen Humphreys/Pool/AP

Markle walks down the aisle of St. George’s Chapel. She was unescorted in what was an unprecedented step for a royal bride in the United Kingdom. Her father was unable to attend the wedding because of health concerns. Danny Lawson/Pool/AP

Two women, watching the wedding on a video screen in Windsor, cry as they watch Markle enter the chapel. Peter Dejong/AP

Page boys hold the train of Markle’s dress as she walks into St. George’s Chapel. She wore a dress by British designer Clare Waight Keller, Givenchy’s first female artistic director. Ben Stansall/Pool/AP

Harry’s father, Prince Charles, waits in the chapel with his wife Camilla, the Duchess of Cornwall. Jonathan Brady/Pool/AFP/Getty Images

Prince Harry, center, arrives with his brother, Prince William. William is Harry’s best man. Ben Stansall/Pool/AFP/Getty Images

Markle arrives for her wedding. Ben Stansall/Pool/AP

Markle and her mother, Doria Ragland, arrive at Windsor Castle for the wedding. Dan Mullan/Getty Images

Young bridesmaids arrive at the wedding, including Harry’s niece Princess Charlotte, far left. Charlotte is holding hands with her mother Catherine, the Duchess of Cambridge. Ben Stansall/Pool/AFP/Getty Images

Guests gather in St. George's Chapel before the wedding. Danny Lawson/PA Wire/AP

The Queen and Prince Philip arrive at St. George's Chapel. Chris Radburn/PA Wire/AP

Actor George Clooney and his wife, Amal, arrive for the wedding. Gareth Fuller/Pool/AP

Actor Idris Elba waves as he arrives at Windsor Castle. Behind him is media mogul Oprah Winfrey. Andrew Milligan/PA Wire/AP

Princess Charlotte sticks her tongue out as she rides to the wedding. Andrew Milligan/Pool/Getty Images

Members of the public go through security as they arrive on Castle Hill. Odd Andersen/Pool/AP

Musician Elton John, left, and his husband, David Furnish, talk with David and Victoria Beckham before the wedding. Danny Lawson/Pool/AFP/Getty Images

Images of Harry and Meghan adorn a window in Windsor. On the left window is Queen Elizabeth II and a corgi. John Sibley/AFP/Getty Images

The Band of the Irish Guards performs outside Windsor Castle. Leon Neal/Getty Images

A security guard overlooks the crowd prior to the wedding. Leon Neal/Getty Images